Actions/Indications:
1. Clears heat: exterior wind-heat or early febrile disorders, interior heat affecting HT and PC, heat in ying level
2. Clears heat, eliminates toxins: abscess, sores, scrofula
3. Promotes urination: Lin zheng (dysuria)
Contraindications: SP/ST deficient cold with diarrhea, may cause photodermatitis